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  1.   8cae531f1e2c6650e04717cbe6afc9f93a5e10ac
  2.   src
  3.   tools
  4.   oggz-scan.c
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/*
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   Copyright (C) 2003 Commonwealth Scientific and Industrial Research
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   Organisation (CSIRO) Australia
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   Redistribution and use in source and binary forms, with or without
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   modification, are permitted provided that the following conditions
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   are met:
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   - Redistributions of source code must retain the above copyright
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   notice, this list of conditions and the following disclaimer.
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   - Redistributions in binary form must reproduce the above copyright
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   notice, this list of conditions and the following disclaimer in the
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   documentation and/or other materials provided with the distribution.
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   - Neither the name of CSIRO Australia nor the names of its
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   contributors may be used to endorse or promote products derived from
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   this software without specific prior written permission.
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   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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   PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ORGANISATION OR
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   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifndef WIN32
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#include <strings.h>
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#endif
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#include <getopt.h>
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#include <errno.h>
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#ifdef HAVE_INTTYPES_H
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#  include <inttypes.h>
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#else
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#  define PRId64 "I64d"
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#endif
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#include "oggz/oggz.h"
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#include "oggz_tools.h"
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/* #define DEBUG */
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#ifdef WIN32
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#define strcasecmp _stricmp
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#endif
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typedef struct {
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  OggzReadPacket read_packet;
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  int clipcount;
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  int pktssincekey;
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  int granuleshift;
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  int keyframes;
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  int cmml;
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  int html;
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} OSData;
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static char * progname;
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static FILE * outfile = NULL;
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#define HTML_HEAD "<html>\n<head>\n<title>OGGZ_SCAN OUTPUT</title>\n</head>\n\n<body>\n
OGGZ_SCAN OUTPUT for %s
\n\n"
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#define HTML_END "
\n</body>\n</html>"
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#define HTML_CLIP "
Clip No %i\tat t=%lf.
\n\n"
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#define CMML_HEAD "<cmml>\n<stream>\n<import src=\"%s\"/>\n</stream>\n\n<head>\n<title>OGGZ_SCAN OUTPUT for %s</title>\n</head>\n\n"
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#define CMML_END "</cmml>"
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#define CMML_CLIP "<clip id=\"clip-%i\" start=\"%lf\">\n<desc>Enter description.</desc>\n</clip>\n\n"
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static void
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usage (char * progname)
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{
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  printf ("Usage: %s [options] filename\n", progname);
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  printf ("Scan an Ogg file and output characteristic landmarks.\n");
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  printf ("\nOutput options\n");
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  printf ("  -o filename, --output filename\n");
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  printf ("                         Specify output filename\n");
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  printf ("  -f format, --format format\n");
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  printf ("                         Specify output format. Supported formats are plain,\n");
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  printf ("                         cmml, and html. (Default: plain)\n");
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  printf ("\nFeature options\n");
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  printf ("  -k, --keyframe         Display timestamps of unforced theora keyframes\n");
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  printf ("\nMiscellaneous options\n");
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  printf ("  -h, --help             Display this help and exit\n");
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  printf ("  -v, --version          Output version information and exit\n");
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  printf ("\n");
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  printf ("Please report bugs to <ogg-dev@xiph.org>\n");
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}
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static int
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filter_page (OGGZ * oggz, const ogg_page * og, long serialno, void * user_data)
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{
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  OSData * osdata = (OSData *) user_data;
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  const char * ident;
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  /* set scanning callback for keyframe calculation on theora pages only */
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  if (osdata->keyframes && ogg_page_bos ((ogg_page *)og)) {
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    ident = ot_page_identify (oggz, og, NULL);
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    if (ident && (strcasecmp ("theora", ident) == 0)) {
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       oggz_set_read_callback (oggz, serialno, osdata->read_packet, osdata);
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    }
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  }
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  return OGGZ_CONTINUE;
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}
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static int
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read_packet (OGGZ * oggz, oggz_packet * zp, long serialno, void * user_data)
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{
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  OSData * osdata = (OSData *) user_data;
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  ogg_packet * op = &zp->op;
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  double time_offset;
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  /* calculate granuleshift for theora track */
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  if (osdata->granuleshift == 0) {
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    osdata->granuleshift = 1 << oggz_get_granuleshift (oggz, serialno);
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    osdata->granuleshift--;
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#ifdef DEBUG
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    fprintf(outfile, "Granuleshift = %d\n", osdata->granuleshift);
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#endif
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  }
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  /* don't do anything on bos page */
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  if (op->b_o_s) {
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    return OGGZ_CONTINUE;
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  }
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  /* calculate the keyframes if requested */
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  if (osdata->keyframes) {
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    /* increase number of packets seen since the last intra frame */
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    osdata->pktssincekey++;
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    /* does the current packet contain a keyframe? */
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    if(!(op->packet[0] & 0x80) /* data packet */ &&
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       !(op->packet[0] & 0x40) /* intra frame */ ) {
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      ogg_int64_t units;
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#ifdef DEBUG
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      fprintf(outfile, "Keyframe found: packetno=%" PRId64
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              "\t pktssincekey=%d\n", op->packetno, osdata->pktssincekey);
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#endif
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      /* if the keyframe is on the granuleshift position, ignore it */
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      if (osdata->pktssincekey >= osdata->granuleshift) {
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        osdata->pktssincekey=0;
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        return OGGZ_CONTINUE;
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      }
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      osdata->pktssincekey=0;
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      /* new shot boundary found: calculate time */
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      units = oggz_tell_units (oggz);
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      if (units == -1) {
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        time_offset = oggz_tell(oggz);
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      } else {
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        time_offset = (double)units / 1000.0;
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      }
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      /* output in requested format */
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      if (osdata->html) {
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        fprintf(outfile, HTML_CLIP, osdata->clipcount, time_offset);
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      }
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      if (osdata->cmml) {
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        fprintf(outfile, CMML_CLIP, osdata->clipcount, time_offset);
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      }
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      osdata->clipcount++;
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      if (!osdata->html && !osdata->cmml) {
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	ot_fprint_time (outfile, time_offset);
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	fputc ('\n', outfile);
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      }
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    }
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  }
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#ifdef DEBUG
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  fprintf (outfile, "%ld bytes pktno=%" PRId64 "\n", op->bytes, op->packetno);
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#endif
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  return OGGZ_CONTINUE;
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}
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int
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main (int argc, char ** argv)
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{
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  int show_version = 0;
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  int show_help = 0;
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  int output_cmml = 0;
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  int output_html = 0;
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  int scan_keyframes = 0;
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  OSData * osdata = NULL;
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  OGGZ * oggz;
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  char * infilename = NULL, * outfilename = NULL;
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  int i;
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  char * optstring = "f:khvo:";
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#ifdef HAVE_GETOPT_LONG
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  static struct option long_options[] = {
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    {"output",   required_argument, 0, 'o'},
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    {"format",   required_argument, 0, 'f'},
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    {"keyframe", no_argument, 0, 'k'},
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    {"help",     no_argument, 0, 'h'},
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    {"version",  no_argument, 0, 'v'},
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    {0,0,0,0}
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  };
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#endif
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  progname = argv[0];
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  if (argc < 2) {
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    usage (progname);
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    return (1);
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  }
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  if (!strncmp (argv[1], "-?", 2)) {
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#ifdef HAVE_GETOPT_LONG
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    ot_print_options (long_options, optstring);
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#else
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    ot_print_short_options (optstring);
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#endif
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    exit (0);
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  }
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  while (1) {
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#ifdef HAVE_GETOPT_LONG
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    i = getopt_long(argc, argv, optstring, long_options, NULL);
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#else
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    i = getopt (argc, argv, optstring);
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#endif
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    if (i == -1) break;
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    if (i == ':') {
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      usage (progname);
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      goto exit_err;
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    }
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    switch (i) {
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    case 'f': /* format */
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      if (!strcmp (optarg, "cmml")) {
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        output_cmml = 1;
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	output_html = 0;
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      } else if (!strcmp (optarg, "html")) {
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        output_cmml = 0;
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	output_html = 1;
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      } else {
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        output_cmml = 0;
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	output_html = 0;
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      }
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      break;
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    case 'w': /* html */
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      output_html = 1;
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      break;
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    case 'k': /* keyframe */
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      scan_keyframes = 1;
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      break;
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    case 'h': /* help */
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      show_help = 1;
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      break;
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    case 'v': /* version */
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      show_version = 1;
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      break;
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    case 'o': /* output */
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      outfilename = optarg;
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      break;
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    default:
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      break;
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    }
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  }
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  if (show_version) {
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    printf ("%s version " VERSION "\n", progname);
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  }
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  if (show_help) {
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    usage (progname);
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  }
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  if (show_version || show_help) {
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    goto exit_ok;
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  }
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  if (optind >= argc) {
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    usage (progname);
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    goto exit_err;
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  }
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  infilename = argv[optind++];
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  if (outfilename == NULL) {
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    outfile = stdout;
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  } else {
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    outfile = fopen (outfilename, "wb");
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    if (outfile == NULL) {
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      fprintf (stderr, "%s: unable to open output file %s\n",
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	       progname, outfilename);
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      goto exit_err;
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    }
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  }
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  errno = 0;
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Packit a38265 
  if (strcmp (infilename, "-") == 0) {
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    oggz = oggz_open_stdio (stdin, OGGZ_READ|OGGZ_AUTO);
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  } else {
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    oggz = oggz_open (infilename, OGGZ_READ|OGGZ_AUTO);
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  }
Packit a38265
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  if (oggz == NULL) {
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    if (errno == 0) {
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      fprintf (stderr, "%s: %s: error opening input file\n",
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	      progname, infilename);
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    } else {
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      fprintf (stderr, "%s: %s: %s\n",
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	       progname, infilename, strerror (errno));
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    }
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    goto exit_err;
Packit a38265 
  }
Packit a38265
Packit a38265 
  /* init osdata */
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  osdata = malloc (sizeof (OSData));
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  if (osdata == NULL) {
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    fprintf (stderr, "%s: Out of memory\n", progname);
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    exit (1);
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  }
Packit a38265
Packit a38265 
  memset (osdata, 0, sizeof (OSData));
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  osdata->read_packet = read_packet;
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  if (scan_keyframes) osdata->keyframes = 1;
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  if (output_cmml)    osdata->cmml = 1;
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  if (output_html)    osdata->html = 1;
Packit a38265
Packit a38265 
  /* set up the right filters on the tracks */
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  oggz_set_read_page (oggz, -1, filter_page, osdata);
Packit a38265
Packit a38265 
  /* correct output format */
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  if (output_html) {
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    fprintf(outfile, HTML_HEAD, infilename);
Packit a38265 
  }
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  if (output_cmml) {
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    fprintf(outfile, CMML_HEAD, infilename, infilename);
Packit a38265 
  }
Packit a38265
Packit a38265 
  oggz_run_set_blocksize (oggz, 1024*1024);
Packit a38265 
  oggz_run (oggz);
Packit a38265
Packit a38265 
  /* finish output */
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  if (output_html) {
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    fprintf(outfile, HTML_END);
Packit a38265 
  }
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  if (output_cmml) {
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    fprintf(outfile, CMML_END);
Packit a38265 
  }
Packit a38265
Packit a38265 
  oggz_close (oggz);
Packit a38265
Packit a38265 
exit_ok:
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  free(osdata);
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  exit(0);
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Packit a38265 
exit_err:
Packit a38265 
  free(osdata);
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  exit(1);
Packit a38265 
}

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